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/programs/develop/libraries/Mesa/src/mesa/main/texparam.c
0,0 → 1,1417
/*
* Mesa 3-D graphics library
* Version: 7.5
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
 
/**
* \file texparam.c
*
* glTexParameter-related functions
*/
 
 
#include "main/glheader.h"
#include "main/colormac.h"
#include "main/context.h"
#include "main/formats.h"
#include "main/macros.h"
#include "main/texcompress.h"
#include "main/texparam.h"
#include "main/teximage.h"
#include "main/texstate.h"
#include "program/prog_instruction.h"
 
 
/**
* Check if a coordinate wrap mode is supported for the texture target.
* \return GL_TRUE if legal, GL_FALSE otherwise
*/
static GLboolean
validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
{
const struct gl_extensions * const e = & ctx->Extensions;
 
if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE ||
(wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
/* any texture target */
return GL_TRUE;
}
else if (target != GL_TEXTURE_RECTANGLE_NV &&
(wrap == GL_REPEAT ||
(wrap == GL_MIRRORED_REPEAT &&
e->ARB_texture_mirrored_repeat) ||
(wrap == GL_MIRROR_CLAMP_EXT &&
(e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
(wrap == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
(e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
(wrap == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
(e->EXT_texture_mirror_clamp)))) {
/* non-rectangle texture */
return GL_TRUE;
}
 
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
return GL_FALSE;
}
 
 
/**
* Get current texture object for given target.
* Return NULL if any error (and record the error).
* Note that this is different from _mesa_select_tex_object() in that proxy
* targets are not accepted.
* Only the glGetTexLevelParameter() functions accept proxy targets.
*/
static struct gl_texture_object *
get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
{
struct gl_texture_unit *texUnit;
 
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sTexParameter(current unit)", get ? "Get" : "");
return NULL;
}
 
texUnit = _mesa_get_current_tex_unit(ctx);
 
switch (target) {
case GL_TEXTURE_1D:
return texUnit->CurrentTex[TEXTURE_1D_INDEX];
case GL_TEXTURE_2D:
return texUnit->CurrentTex[TEXTURE_2D_INDEX];
case GL_TEXTURE_3D:
return texUnit->CurrentTex[TEXTURE_3D_INDEX];
case GL_TEXTURE_CUBE_MAP:
if (ctx->Extensions.ARB_texture_cube_map) {
return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
}
break;
case GL_TEXTURE_RECTANGLE_NV:
if (ctx->Extensions.NV_texture_rectangle) {
return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
}
break;
case GL_TEXTURE_1D_ARRAY_EXT:
if (ctx->Extensions.MESA_texture_array) {
return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
}
break;
case GL_TEXTURE_2D_ARRAY_EXT:
if (ctx->Extensions.MESA_texture_array) {
return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
}
break;
default:
;
}
 
_mesa_error(ctx, GL_INVALID_ENUM,
"gl%sTexParameter(target)", get ? "Get" : "");
return NULL;
}
 
 
/**
* Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
* \return -1 if error.
*/
static GLint
comp_to_swizzle(GLenum comp)
{
switch (comp) {
case GL_RED:
return SWIZZLE_X;
case GL_GREEN:
return SWIZZLE_Y;
case GL_BLUE:
return SWIZZLE_Z;
case GL_ALPHA:
return SWIZZLE_W;
case GL_ZERO:
return SWIZZLE_ZERO;
case GL_ONE:
return SWIZZLE_ONE;
default:
return -1;
}
}
 
 
static void
set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
{
ASSERT(comp < 4);
ASSERT(swz <= SWIZZLE_NIL);
{
GLuint mask = 0x7 << (3 * comp);
GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
*swizzle = s;
}
}
 
 
/**
* This is called just prior to changing any texture object state.
* Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
* state flag and then mark the texture object as 'incomplete' so that any
* per-texture derived state gets recomputed.
*/
static INLINE void
flush(struct gl_context *ctx, struct gl_texture_object *texObj)
{
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->_Complete = GL_FALSE;
}
 
 
/**
* Set an integer-valued texture parameter
* \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
*/
static GLboolean
set_tex_parameteri(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum pname, const GLint *params)
{
switch (pname) {
case GL_TEXTURE_MIN_FILTER:
if (texObj->MinFilter == params[0])
return GL_FALSE;
switch (params[0]) {
case GL_NEAREST:
case GL_LINEAR:
flush(ctx, texObj);
texObj->MinFilter = params[0];
return GL_TRUE;
case GL_NEAREST_MIPMAP_NEAREST:
case GL_LINEAR_MIPMAP_NEAREST:
case GL_NEAREST_MIPMAP_LINEAR:
case GL_LINEAR_MIPMAP_LINEAR:
if (texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
flush(ctx, texObj);
texObj->MinFilter = params[0];
return GL_TRUE;
}
/* fall-through */
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)",
params[0] );
}
return GL_FALSE;
 
case GL_TEXTURE_MAG_FILTER:
if (texObj->MagFilter == params[0])
return GL_FALSE;
switch (params[0]) {
case GL_NEAREST:
case GL_LINEAR:
flush(ctx, texObj);
texObj->MagFilter = params[0];
return GL_TRUE;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)",
params[0]);
}
return GL_FALSE;
 
case GL_TEXTURE_WRAP_S:
if (texObj->WrapS == params[0])
return GL_FALSE;
if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
flush(ctx, texObj);
texObj->WrapS = params[0];
return GL_TRUE;
}
return GL_FALSE;
 
case GL_TEXTURE_WRAP_T:
if (texObj->WrapT == params[0])
return GL_FALSE;
if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
flush(ctx, texObj);
texObj->WrapT = params[0];
return GL_TRUE;
}
return GL_FALSE;
 
case GL_TEXTURE_WRAP_R:
if (texObj->WrapR == params[0])
return GL_FALSE;
if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
flush(ctx, texObj);
texObj->WrapR = params[0];
return GL_TRUE;
}
return GL_FALSE;
 
case GL_TEXTURE_BASE_LEVEL:
if (texObj->BaseLevel == params[0])
return GL_FALSE;
if (params[0] < 0 ||
(texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexParameter(param=%d)", params[0]);
return GL_FALSE;
}
flush(ctx, texObj);
texObj->BaseLevel = params[0];
return GL_TRUE;
 
case GL_TEXTURE_MAX_LEVEL:
if (texObj->MaxLevel == params[0])
return GL_FALSE;
if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexParameter(param=%d)", params[0]);
return GL_FALSE;
}
flush(ctx, texObj);
texObj->MaxLevel = params[0];
return GL_TRUE;
 
case GL_GENERATE_MIPMAP_SGIS:
if (texObj->GenerateMipmap != params[0]) {
flush(ctx, texObj);
texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
return GL_TRUE;
}
return GL_FALSE;
 
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow &&
(params[0] == GL_NONE ||
params[0] == GL_COMPARE_R_TO_TEXTURE_ARB)) {
if (texObj->CompareMode != params[0]) {
flush(ctx, texObj);
texObj->CompareMode = params[0];
return GL_TRUE;
}
return GL_FALSE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(GL_TEXTURE_COMPARE_MODE_ARB)");
}
return GL_FALSE;
 
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
if (texObj->CompareFunc == params[0])
return GL_FALSE;
switch (params[0]) {
case GL_LEQUAL:
case GL_GEQUAL:
flush(ctx, texObj);
texObj->CompareFunc = params[0];
return GL_TRUE;
case GL_EQUAL:
case GL_NOTEQUAL:
case GL_LESS:
case GL_GREATER:
case GL_ALWAYS:
case GL_NEVER:
if (ctx->Extensions.EXT_shadow_funcs) {
flush(ctx, texObj);
texObj->CompareFunc = params[0];
return GL_TRUE;
}
/* fall-through */
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(GL_TEXTURE_COMPARE_FUNC_ARB)");
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
}
return GL_FALSE;
 
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture &&
(params[0] == GL_LUMINANCE ||
params[0] == GL_INTENSITY ||
params[0] == GL_ALPHA ||
(ctx->Extensions.ARB_texture_rg && params[0] == GL_RED))) {
if (texObj->DepthMode != params[0]) {
flush(ctx, texObj);
texObj->DepthMode = params[0];
return GL_TRUE;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(GL_DEPTH_TEXTURE_MODE_ARB)");
}
return GL_FALSE;
 
#if FEATURE_OES_draw_texture
case GL_TEXTURE_CROP_RECT_OES:
texObj->CropRect[0] = params[0];
texObj->CropRect[1] = params[1];
texObj->CropRect[2] = params[2];
texObj->CropRect[3] = params[3];
return GL_TRUE;
#endif
 
case GL_TEXTURE_SWIZZLE_R_EXT:
case GL_TEXTURE_SWIZZLE_G_EXT:
case GL_TEXTURE_SWIZZLE_B_EXT:
case GL_TEXTURE_SWIZZLE_A_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
const GLint swz = comp_to_swizzle(params[0]);
if (swz < 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexParameter(swizzle 0x%x)", params[0]);
return GL_FALSE;
}
ASSERT(comp < 4);
if (swz >= 0) {
flush(ctx, texObj);
texObj->Swizzle[comp] = params[0];
set_swizzle_component(&texObj->_Swizzle, comp, swz);
return GL_TRUE;
}
}
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
return GL_FALSE;
 
case GL_TEXTURE_SWIZZLE_RGBA_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
GLuint comp;
flush(ctx, texObj);
for (comp = 0; comp < 4; comp++) {
const GLint swz = comp_to_swizzle(params[comp]);
if (swz >= 0) {
texObj->Swizzle[comp] = params[comp];
set_swizzle_component(&texObj->_Swizzle, comp, swz);
}
else {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexParameter(swizzle 0x%x)", params[comp]);
return GL_FALSE;
}
}
return GL_TRUE;
}
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
return GL_FALSE;
 
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
}
return GL_FALSE;
}
 
 
/**
* Set a float-valued texture parameter
* \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
*/
static GLboolean
set_tex_parameterf(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum pname, const GLfloat *params)
{
switch (pname) {
case GL_TEXTURE_MIN_LOD:
if (texObj->MinLod == params[0])
return GL_FALSE;
flush(ctx, texObj);
texObj->MinLod = params[0];
return GL_TRUE;
 
case GL_TEXTURE_MAX_LOD:
if (texObj->MaxLod == params[0])
return GL_FALSE;
flush(ctx, texObj);
texObj->MaxLod = params[0];
return GL_TRUE;
 
case GL_TEXTURE_PRIORITY:
flush(ctx, texObj);
texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
return GL_TRUE;
 
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
if (texObj->MaxAnisotropy == params[0])
return GL_FALSE;
if (params[0] < 1.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return GL_FALSE;
}
flush(ctx, texObj);
/* clamp to max, that's what NVIDIA does */
texObj->MaxAnisotropy = MIN2(params[0],
ctx->Const.MaxTextureMaxAnisotropy);
return GL_TRUE;
}
else {
static GLuint count = 0;
if (count++ < 10)
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
}
return GL_FALSE;
 
case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
if (ctx->Extensions.ARB_shadow_ambient) {
if (texObj->CompareFailValue != params[0]) {
flush(ctx, texObj);
texObj->CompareFailValue = CLAMP(params[0], 0.0F, 1.0F);
return GL_TRUE;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)");
}
return GL_FALSE;
 
case GL_TEXTURE_LOD_BIAS:
/* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
if (ctx->Extensions.EXT_texture_lod_bias) {
if (texObj->LodBias != params[0]) {
flush(ctx, texObj);
texObj->LodBias = params[0];
return GL_TRUE;
}
return GL_FALSE;
}
break;
 
case GL_TEXTURE_BORDER_COLOR:
flush(ctx, texObj);
texObj->BorderColor.f[RCOMP] = params[0];
texObj->BorderColor.f[GCOMP] = params[1];
texObj->BorderColor.f[BCOMP] = params[2];
texObj->BorderColor.f[ACOMP] = params[3];
return GL_TRUE;
 
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
}
return GL_FALSE;
}
 
 
void GLAPIENTRY
_mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
{
GLboolean need_update;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_MIN_FILTER:
case GL_TEXTURE_MAG_FILTER:
case GL_TEXTURE_WRAP_S:
case GL_TEXTURE_WRAP_T:
case GL_TEXTURE_WRAP_R:
case GL_TEXTURE_BASE_LEVEL:
case GL_TEXTURE_MAX_LEVEL:
case GL_GENERATE_MIPMAP_SGIS:
case GL_TEXTURE_COMPARE_MODE_ARB:
case GL_TEXTURE_COMPARE_FUNC_ARB:
case GL_DEPTH_TEXTURE_MODE_ARB:
{
/* convert float param to int */
GLint p[4];
p[0] = (GLint) param;
p[1] = p[2] = p[3] = 0;
need_update = set_tex_parameteri(ctx, texObj, pname, p);
}
break;
default:
{
/* this will generate an error if pname is illegal */
GLfloat p[4];
p[0] = param;
p[1] = p[2] = p[3] = 0.0F;
need_update = set_tex_parameterf(ctx, texObj, pname, p);
}
}
 
if (ctx->Driver.TexParameter && need_update) {
ctx->Driver.TexParameter(ctx, target, texObj, pname, &param);
}
}
 
 
void GLAPIENTRY
_mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
{
GLboolean need_update;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_MIN_FILTER:
case GL_TEXTURE_MAG_FILTER:
case GL_TEXTURE_WRAP_S:
case GL_TEXTURE_WRAP_T:
case GL_TEXTURE_WRAP_R:
case GL_TEXTURE_BASE_LEVEL:
case GL_TEXTURE_MAX_LEVEL:
case GL_GENERATE_MIPMAP_SGIS:
case GL_TEXTURE_COMPARE_MODE_ARB:
case GL_TEXTURE_COMPARE_FUNC_ARB:
case GL_DEPTH_TEXTURE_MODE_ARB:
{
/* convert float param to int */
GLint p[4];
p[0] = (GLint) params[0];
p[1] = p[2] = p[3] = 0;
need_update = set_tex_parameteri(ctx, texObj, pname, p);
}
break;
 
#if FEATURE_OES_draw_texture
case GL_TEXTURE_CROP_RECT_OES:
{
/* convert float params to int */
GLint iparams[4];
iparams[0] = (GLint) params[0];
iparams[1] = (GLint) params[1];
iparams[2] = (GLint) params[2];
iparams[3] = (GLint) params[3];
need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
}
break;
#endif
 
default:
/* this will generate an error if pname is illegal */
need_update = set_tex_parameterf(ctx, texObj, pname, params);
}
 
if (ctx->Driver.TexParameter && need_update) {
ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
}
}
 
 
void GLAPIENTRY
_mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
{
GLboolean need_update;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_MIN_LOD:
case GL_TEXTURE_MAX_LOD:
case GL_TEXTURE_PRIORITY:
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
case GL_TEXTURE_LOD_BIAS:
case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
{
GLfloat fparam[4];
fparam[0] = (GLfloat) param;
fparam[1] = fparam[2] = fparam[3] = 0.0F;
/* convert int param to float */
need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
}
break;
default:
/* this will generate an error if pname is illegal */
{
GLint iparam[4];
iparam[0] = param;
iparam[1] = iparam[2] = iparam[3] = 0;
need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
}
}
 
if (ctx->Driver.TexParameter && need_update) {
GLfloat fparam = (GLfloat) param;
ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
}
}
 
 
void GLAPIENTRY
_mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
{
GLboolean need_update;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_BORDER_COLOR:
{
/* convert int params to float */
GLfloat fparams[4];
fparams[0] = INT_TO_FLOAT(params[0]);
fparams[1] = INT_TO_FLOAT(params[1]);
fparams[2] = INT_TO_FLOAT(params[2]);
fparams[3] = INT_TO_FLOAT(params[3]);
need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
}
break;
case GL_TEXTURE_MIN_LOD:
case GL_TEXTURE_MAX_LOD:
case GL_TEXTURE_PRIORITY:
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
case GL_TEXTURE_LOD_BIAS:
case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
{
/* convert int param to float */
GLfloat fparams[4];
fparams[0] = (GLfloat) params[0];
fparams[1] = fparams[2] = fparams[3] = 0.0F;
need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
}
break;
default:
/* this will generate an error if pname is illegal */
need_update = set_tex_parameteri(ctx, texObj, pname, params);
}
 
if (ctx->Driver.TexParameter && need_update) {
GLfloat fparams[4];
fparams[0] = INT_TO_FLOAT(params[0]);
if (pname == GL_TEXTURE_BORDER_COLOR ||
pname == GL_TEXTURE_CROP_RECT_OES) {
fparams[1] = INT_TO_FLOAT(params[1]);
fparams[2] = INT_TO_FLOAT(params[2]);
fparams[3] = INT_TO_FLOAT(params[3]);
}
ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
}
}
 
 
/**
* Set tex parameter to integer value(s). Primarily intended to set
* integer-valued texture border color (for integer-valued textures).
* New in GL 3.0.
*/
void GLAPIENTRY
_mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_BORDER_COLOR:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
/* set the integer-valued border color */
COPY_4V(texObj->BorderColor.i, params);
break;
default:
_mesa_TexParameteriv(target, pname, params);
break;
}
/* XXX no driver hook for TexParameterIiv() yet */
}
 
 
/**
* Set tex parameter to unsigned integer value(s). Primarily intended to set
* uint-valued texture border color (for integer-valued textures).
* New in GL 3.0
*/
void GLAPIENTRY
_mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_FALSE);
if (!texObj)
return;
 
switch (pname) {
case GL_TEXTURE_BORDER_COLOR:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
/* set the unsigned integer-valued border color */
COPY_4V(texObj->BorderColor.ui, params);
break;
default:
_mesa_TexParameteriv(target, pname, (const GLint *) params);
break;
}
/* XXX no driver hook for TexParameterIuiv() yet */
}
 
 
 
 
void GLAPIENTRY
_mesa_GetTexLevelParameterfv( GLenum target, GLint level,
GLenum pname, GLfloat *params )
{
GLint iparam;
_mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
*params = (GLfloat) iparam;
}
 
 
void GLAPIENTRY
_mesa_GetTexLevelParameteriv( GLenum target, GLint level,
GLenum pname, GLint *params )
{
const struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
const struct gl_texture_image *img = NULL;
GLboolean isProxy;
GLint maxLevels;
gl_format texFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetTexLevelParameteriv(current unit)");
return;
}
 
texUnit = _mesa_get_current_tex_unit(ctx);
 
/* this will catch bad target values */
maxLevels = _mesa_max_texture_levels(ctx, target);
if (maxLevels == 0) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(target=0x%x)", target);
return;
}
 
if (level < 0 || level >= maxLevels) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
return;
}
 
texObj = _mesa_select_tex_object(ctx, texUnit, target);
_mesa_lock_texture(ctx, texObj);
 
img = _mesa_select_tex_image(ctx, texObj, target, level);
if (!img || !img->TexFormat) {
/* undefined texture image */
if (pname == GL_TEXTURE_COMPONENTS)
*params = 1;
else
*params = 0;
goto out;
}
 
texFormat = img->TexFormat;
 
isProxy = _mesa_is_proxy_texture(target);
 
switch (pname) {
case GL_TEXTURE_WIDTH:
*params = img->Width;
break;
case GL_TEXTURE_HEIGHT:
*params = img->Height;
break;
case GL_TEXTURE_DEPTH:
*params = img->Depth;
break;
case GL_TEXTURE_INTERNAL_FORMAT:
if (_mesa_is_format_compressed(img->TexFormat)) {
/* need to return the actual compressed format */
*params = _mesa_compressed_format_to_glenum(ctx, img->TexFormat);
}
else {
/* return the user's requested internal format */
*params = img->InternalFormat;
}
break;
case GL_TEXTURE_BORDER:
*params = img->Border;
break;
case GL_TEXTURE_RED_SIZE:
if (img->_BaseFormat == GL_RED) {
*params = _mesa_get_format_bits(texFormat, pname);
break;
}
/* FALLTHROUGH */
case GL_TEXTURE_GREEN_SIZE:
if (img->_BaseFormat == GL_RG) {
*params = _mesa_get_format_bits(texFormat, pname);
break;
}
/* FALLTHROUGH */
case GL_TEXTURE_BLUE_SIZE:
if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_ALPHA_SIZE:
if (img->_BaseFormat == GL_ALPHA ||
img->_BaseFormat == GL_LUMINANCE_ALPHA ||
img->_BaseFormat == GL_RGBA)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_INTENSITY_SIZE:
if (img->_BaseFormat != GL_INTENSITY)
*params = 0;
else {
*params = _mesa_get_format_bits(texFormat, pname);
if (*params == 0) {
/* intensity probably stored as rgb texture */
*params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
_mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
}
}
break;
case GL_TEXTURE_LUMINANCE_SIZE:
if (img->_BaseFormat != GL_LUMINANCE &&
img->_BaseFormat != GL_LUMINANCE_ALPHA)
*params = 0;
else {
*params = _mesa_get_format_bits(texFormat, pname);
if (*params == 0) {
/* luminance probably stored as rgb texture */
*params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
_mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
}
}
break;
case GL_TEXTURE_INDEX_SIZE_EXT:
if (img->_BaseFormat == GL_COLOR_INDEX)
*params = _mesa_get_format_bits(texFormat, pname);
else
*params = 0;
break;
case GL_TEXTURE_DEPTH_SIZE_ARB:
if (ctx->Extensions.ARB_depth_texture)
*params = _mesa_get_format_bits(texFormat, pname);
else
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
break;
case GL_TEXTURE_STENCIL_SIZE_EXT:
if (ctx->Extensions.EXT_packed_depth_stencil ||
ctx->Extensions.ARB_framebuffer_object) {
*params = _mesa_get_format_bits(texFormat, pname);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_SHARED_SIZE:
if (ctx->VersionMajor >= 3) {
/* XXX return number of exponent bits for shared exponent texture
* formats, like GL_RGB9_E5.
*/
*params = 0;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
 
/* GL_ARB_texture_compression */
case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
if (_mesa_is_format_compressed(img->TexFormat) && !isProxy) {
*params = _mesa_format_image_size(texFormat, img->Width,
img->Height, img->Depth);
}
else {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_COMPRESSED:
*params = (GLint) _mesa_is_format_compressed(img->TexFormat);
break;
 
/* GL_ARB_texture_float */
case GL_TEXTURE_RED_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_GREEN_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_BLUE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_ALPHA_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_LUMINANCE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_LUMINANCE_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_INTENSITY_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_INTENSITY_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
case GL_TEXTURE_DEPTH_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE) ?
_mesa_get_format_datatype(texFormat) : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
break;
 
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
 
out:
_mesa_unlock_texture(ctx, texObj);
}
 
 
 
void GLAPIENTRY
_mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
{
struct gl_texture_object *obj;
GLboolean error = GL_FALSE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
obj = get_texobj(ctx, target, GL_TRUE);
if (!obj)
return;
 
_mesa_lock_texture(ctx, obj);
switch (pname) {
case GL_TEXTURE_MAG_FILTER:
*params = ENUM_TO_FLOAT(obj->MagFilter);
break;
case GL_TEXTURE_MIN_FILTER:
*params = ENUM_TO_FLOAT(obj->MinFilter);
break;
case GL_TEXTURE_WRAP_S:
*params = ENUM_TO_FLOAT(obj->WrapS);
break;
case GL_TEXTURE_WRAP_T:
*params = ENUM_TO_FLOAT(obj->WrapT);
break;
case GL_TEXTURE_WRAP_R:
*params = ENUM_TO_FLOAT(obj->WrapR);
break;
case GL_TEXTURE_BORDER_COLOR:
params[0] = CLAMP(obj->BorderColor.f[0], 0.0F, 1.0F);
params[1] = CLAMP(obj->BorderColor.f[1], 0.0F, 1.0F);
params[2] = CLAMP(obj->BorderColor.f[2], 0.0F, 1.0F);
params[3] = CLAMP(obj->BorderColor.f[3], 0.0F, 1.0F);
break;
case GL_TEXTURE_RESIDENT:
{
GLboolean resident;
if (ctx->Driver.IsTextureResident)
resident = ctx->Driver.IsTextureResident(ctx, obj);
else
resident = GL_TRUE;
*params = ENUM_TO_FLOAT(resident);
}
break;
case GL_TEXTURE_PRIORITY:
*params = obj->Priority;
break;
case GL_TEXTURE_MIN_LOD:
*params = obj->MinLod;
break;
case GL_TEXTURE_MAX_LOD:
*params = obj->MaxLod;
break;
case GL_TEXTURE_BASE_LEVEL:
*params = (GLfloat) obj->BaseLevel;
break;
case GL_TEXTURE_MAX_LEVEL:
*params = (GLfloat) obj->MaxLevel;
break;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
*params = obj->MaxAnisotropy;
}
else
error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
if (ctx->Extensions.ARB_shadow_ambient) {
*params = obj->CompareFailValue;
}
else
error = GL_TRUE;
break;
case GL_GENERATE_MIPMAP_SGIS:
*params = (GLfloat) obj->GenerateMipmap;
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareMode;
}
else
error = GL_TRUE;
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareFunc;
}
else
error = GL_TRUE;
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLfloat) obj->DepthMode;
}
else
error = GL_TRUE;
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = obj->LodBias;
}
else
error = GL_TRUE;
break;
#if FEATURE_OES_draw_texture
case GL_TEXTURE_CROP_RECT_OES:
params[0] = obj->CropRect[0];
params[1] = obj->CropRect[1];
params[2] = obj->CropRect[2];
params[3] = obj->CropRect[3];
break;
#endif
 
case GL_TEXTURE_SWIZZLE_R_EXT:
case GL_TEXTURE_SWIZZLE_G_EXT:
case GL_TEXTURE_SWIZZLE_B_EXT:
case GL_TEXTURE_SWIZZLE_A_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
*params = (GLfloat) obj->Swizzle[comp];
}
else {
error = GL_TRUE;
}
break;
 
case GL_TEXTURE_SWIZZLE_RGBA_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
GLuint comp;
for (comp = 0; comp < 4; comp++) {
params[comp] = (GLfloat) obj->Swizzle[comp];
}
}
else {
error = GL_TRUE;
}
break;
 
default:
error = GL_TRUE;
break;
}
 
if (error)
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)",
pname);
 
_mesa_unlock_texture(ctx, obj);
}
 
 
void GLAPIENTRY
_mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
{
struct gl_texture_object *obj;
GLboolean error = GL_FALSE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
obj = get_texobj(ctx, target, GL_TRUE);
if (!obj)
return;
 
_mesa_lock_texture(ctx, obj);
switch (pname) {
case GL_TEXTURE_MAG_FILTER:
*params = (GLint) obj->MagFilter;
break;;
case GL_TEXTURE_MIN_FILTER:
*params = (GLint) obj->MinFilter;
break;;
case GL_TEXTURE_WRAP_S:
*params = (GLint) obj->WrapS;
break;;
case GL_TEXTURE_WRAP_T:
*params = (GLint) obj->WrapT;
break;;
case GL_TEXTURE_WRAP_R:
*params = (GLint) obj->WrapR;
break;;
case GL_TEXTURE_BORDER_COLOR:
{
GLfloat b[4];
b[0] = CLAMP(obj->BorderColor.f[0], 0.0F, 1.0F);
b[1] = CLAMP(obj->BorderColor.f[1], 0.0F, 1.0F);
b[2] = CLAMP(obj->BorderColor.f[2], 0.0F, 1.0F);
b[3] = CLAMP(obj->BorderColor.f[3], 0.0F, 1.0F);
params[0] = FLOAT_TO_INT(b[0]);
params[1] = FLOAT_TO_INT(b[1]);
params[2] = FLOAT_TO_INT(b[2]);
params[3] = FLOAT_TO_INT(b[3]);
}
break;;
case GL_TEXTURE_RESIDENT:
{
GLboolean resident;
if (ctx->Driver.IsTextureResident)
resident = ctx->Driver.IsTextureResident(ctx, obj);
else
resident = GL_TRUE;
*params = (GLint) resident;
}
break;;
case GL_TEXTURE_PRIORITY:
*params = FLOAT_TO_INT(obj->Priority);
break;;
case GL_TEXTURE_MIN_LOD:
*params = (GLint) obj->MinLod;
break;;
case GL_TEXTURE_MAX_LOD:
*params = (GLint) obj->MaxLod;
break;;
case GL_TEXTURE_BASE_LEVEL:
*params = obj->BaseLevel;
break;;
case GL_TEXTURE_MAX_LEVEL:
*params = obj->MaxLevel;
break;;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
*params = (GLint) obj->MaxAnisotropy;
}
else {
error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
if (ctx->Extensions.ARB_shadow_ambient) {
*params = (GLint) FLOAT_TO_INT(obj->CompareFailValue);
}
else {
error = GL_TRUE;
}
break;
case GL_GENERATE_MIPMAP_SGIS:
*params = (GLint) obj->GenerateMipmap;
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareMode;
}
else {
error = GL_TRUE;
}
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareFunc;
}
else {
error = GL_TRUE;
}
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLint) obj->DepthMode;
}
else {
error = GL_TRUE;
}
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = (GLint) obj->LodBias;
}
else {
error = GL_TRUE;
}
break;
#if FEATURE_OES_draw_texture
case GL_TEXTURE_CROP_RECT_OES:
params[0] = obj->CropRect[0];
params[1] = obj->CropRect[1];
params[2] = obj->CropRect[2];
params[3] = obj->CropRect[3];
break;
#endif
case GL_TEXTURE_SWIZZLE_R_EXT:
case GL_TEXTURE_SWIZZLE_G_EXT:
case GL_TEXTURE_SWIZZLE_B_EXT:
case GL_TEXTURE_SWIZZLE_A_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
*params = obj->Swizzle[comp];
}
else {
error = GL_TRUE;
}
break;
 
case GL_TEXTURE_SWIZZLE_RGBA_EXT:
if (ctx->Extensions.EXT_texture_swizzle) {
COPY_4V(params, obj->Swizzle);
}
else {
error = GL_TRUE;
}
break;
 
default:
; /* silence warnings */
}
 
if (error)
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)",
pname);
 
_mesa_unlock_texture(ctx, obj);
}
 
 
/** New in GL 3.0 */
void GLAPIENTRY
_mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_TRUE);
switch (pname) {
case GL_TEXTURE_BORDER_COLOR:
COPY_4V(params, texObj->BorderColor.i);
break;
default:
_mesa_GetTexParameteriv(target, pname, params);
}
}
 
 
/** New in GL 3.0 */
void GLAPIENTRY
_mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
 
texObj = get_texobj(ctx, target, GL_TRUE);
switch (pname) {
case GL_TEXTURE_BORDER_COLOR:
COPY_4V(params, texObj->BorderColor.i);
break;
default:
{
GLint ip[4];
_mesa_GetTexParameteriv(target, pname, ip);
params[0] = ip[0];
if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
pname == GL_TEXTURE_CROP_RECT_OES) {
params[1] = ip[1];
params[2] = ip[2];
params[3] = ip[3];
}
}
}
}